将2d numpy数组连接到3d numpy数组

Question

I have large set of 2d arrays which are being created with loop.

>>> for x in list_imd:
...     arr = arcpy.RasterToNumPyArray(x)
...     print arr.shape
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)
(129, 135)

I want to convert these 2d arrays into one 3d array.

>>> arr_stacked.shape
(19, 129, 135)

Answer 1

Try using the simple numpy.array constructor :

import numpy as np

np.array([arcpy.RasterToNumPyArray(x) for x in list_imd])

---

Here is an example that works by me:

a = np.array([[1, 2, 3], [3, 4, 5]])

>>> np.array([a, a]).shape
(2, 2, 3)